Blagdon Pump X25 Service- und Betriebshandbuch - Seite 5

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1. Service

TROUBLE SHOOTING GUIDE

NOTE :- Check all solutions before dismantling the pump.

PROBLEM

Pump will not start

Erratic flow

Pump strokes but will not

discharge

Fluid discharged from air

exhaust

Intermittent stroke rate

FLUID CONNECTIONS

1" BSP (F)

1" ANSI 150 FLANGE

MAX. WORKING PRES-

SURE

7.0 Bar (100 psi)

For overall dimensions see page 7

HG-CF-1101 Rev. C – 19.05.06

Trouble Shooting Guide & Technical Data

Air valve assembly malfunction/Seizure

Obstructed fluid line.

Obstructed diaphragm chamber.

Diaphragm failure causing fluid & excessive air to be

expelled through the exhaust.

Diaphragm seal failure.

Air valve system malfunction.

Air connected to exhaust.

Diaphragm failure on one side.

Valve ball not seating.

Suction leakage.

Diaphragm failure causing fluid & excessive air to be

expelled through the exhaust.

Diaphragm seal failure.

Air valve system malfunction.

Excessive suction lift.

Suction line leakage.

Valve ball not seating correctly or damaged.

Suction line or strainer clogged.

Diaphragm failure.

Diaphragm Failure.

Loose frontplate.

Over lubrication

Diaphragm shaft seal failure.

Air valve system malfunction.

Valve ball not seating / partially obstructed.

TECHNICAL DATA

CAPACITY

0 - 136 Litres/Minute

(0 - 30 Gallons/Minute)

AIR INLET

3/8" BSP (F)

3/8" NPT (F)

CAUSE

MAX SOLIDS

MAX DISCHARGE HEAD

3 MM

(1/8")

TEMPERATURE LIMITS

100

C PTFE & Conductive PTFE

SOLUTION

Check carrier for freedom of movement. -

Clean, oil & replace.

Clean line or increase line size.

Remove obstruction.

Replace diaphragm.

Replace shaft seals.

Check all seals in valve chest assembly.

Re-connect to air inlet.

Replace diaphragm.

Check and remove obstruction.

Check and correct.

Replace diaphragm.

Replace shaft seals.

Check all seals in valve chest assembly.

Shorten suction line.

Check and correct.

Check and remove obstruction / replace.

Clear.

Replace diaphragm.

Re-Torque to manual specifications.

Shut-down pump. Remove air connection

into pump & introduce a small quantity of de-

greasing agent into air valve and replace

line. Run pump until clear.

Replace seals.

Check all seals in valve chest assembly.

Clear obstruction.

70 Meters

(230 ft)

PUMP WEIGHTS :-

DISPLACEMENT

PER STROKE

0.475 Litres

(0.1 UK Gallons)

T5 : 37 Kg

44 : 40 Kg

Page 5